In UDF, its key significance is how it manages the data on the CD/DVD so that it has familiar operation with what users have come to think of in their use of HDD/USB/SMB/DFS storage. That is the ability to freely read and write with the disc maintaining the integrity of data management in a similar fashion.

And, as far as UDF goes on CD/DVD technology, there is tremendous benefit to management at the TOC level.

This is and what I share never was an appeal for changing anything to do with Puppy's save-session. It, solely, approached the ability to create a disc that can be used to freely read and write on one system and employed similarly on a Puppy Linux system.

You nailed it there gc martin, clarified.

So what's the state of play with Puppy and UDF?

Never use the save file, find it cumbersome and restrictive and anything outside it is verbotten (have to boot into another operating system to get to the other bits of fat 32).

I've got a fresh stick, is there a pet that will format it as UDF? Maybe a GParted addon.

Then I will use LILI (http://www.linuxliveusb.com) to write a Puppy ISO to it. Sound like a plan?

I've ran into this as a hardcoded issue with growisofs, seems that using UDF will force a disc into closed mode for adding multisessions. Hard lesson burning a sub 200M puppylinux as a UDF and not being able to use the other 23G of space. The little burn in ring of puppylinux is barely visible on a Blu-Ray disc so I kept trying to reuse same 'blank'

All is not lost, during the months of trying to get UDF support added to puppy, I found a way to hybrid a totally non-standard UDF/ISO format command that puppy can boot from and looks/acts however puppy thinks it is, with the changes Barry did it, shows up and acts like a UDF with large file sizes reporting correctly.
So UDF does boot and is mounted directly on current puppy versions, but does not seem useful with the multisession mode puppylinux pioneered due to tools used

If Ted Dog reads this, it would be interesting to see all the UDF boot code pasted into Barry's blog, I think line wrapping was off in the attached example.

EDIT: Sorry Ted Dog, I thought it was just a screenshot, not an active window.

Stupid question: If a live puppy is burnt to the first 'partition' on a multisession DVD-RW, can the rest of the disc be converted to UDF format, or must the whole disc be the same format to be recognized?

tallboy

It's possible, I have done this, but optical drive support software does not even think about a disc having parts. If you want to have fun. here is a way to make a bootable harddrive image.

Code:

growisofs -Z /dev/sr0=/dev/hda

I used to keep my windows XP C drive partition a DVD size of 4.3G and backup directly onto DVD, now my Windows Vista partitions are 20G and backup with BluRay with same command.

Best to stick with current methods on DVD's UDF does not add much, and can't support multisession, YET.

I should really write a stupid tricks and tips thread for optical drives.

Ted, I can't find anything that says the UDF specification is proprietary (in the sense that means you have to pay someone to use it, or at least get their permission.) Here's something I found on the website you gave:

Quote:

The Optical Storage Technology Association (OSTA) was incorporated as an international trade association in 1992 to promote the use of writable optical technologies and products. The organization’s membership includes manufacturers and resellers from three continents, representing more than 85 percent of worldwide writable optical product shipments, working together to educate consumers and shape the future of the optical storage industry. Included among OSTA’s many accomplishments are its groundbreaking CD-R compatibility efforts, development of the Universal Disc Format (UDF) as well as the MultiRead, MultiPlay, MultiAudio and MultiPhoto/Video (MPV) specifications.

It appears that the UDF specification is available for free to anyone who wants to use it.

Got me my first DVD-RAM that came preformatted with UDF . Vendor: Verbatim . I used rox to drag a folder onto it and it burned there . Then i made a folder on it and dragged the first one into it . At umount time, the burner was busy . Mounting it another time, 2/3rd of the subfolders got corrupted.

EDIT: dragged the folder into lost+found, unmounted, mounted -t ext3 /dev/sr2 /mnt/sr2 : No corruptions. Dragged the folder back on top of /mnt/sr2, unmounted, mounted : No corruption. Seems that this would be a new way to "burn" a .iso to a bootable DVD (needs grub of course) .

#if dropped down here, it is likely to be a data partition...
#if it is a mountable partition then mount and open with rox. If already mntd then open in rox...
#

(Slacko Puppy 5.3.1 works to mount the sr2 icon on the desktop by clicking it)_________________«Give me GUI or Death» -- I give you [[Xx]term[inal]] [[Cc]on[s][ole]] .
Macpup user since 2010 on full installations.
People who want problems with Puppy boot frugal Last edited by Karl Godt on Sat 09 Mar 2013, 17:12; edited 1 time in total

I have several DVD-RAM disc media. I NEVER tried their use in Puppy even though I have used them in past on Microsoft.

@Karl Godt, THANKS for your sharing your findings.

This brings very interesting possibilities.

One that comes to mind is the GRUB4DOS efforts that support booting ISOs without having to expand them. Such as done by @Rcrsn51's ISObooter and by @Scooby's Easy2Boot efforts where you simply add an ISO to the media and when the media is booted, a bootmenu presents all ISOs available on the media for booting selection.

Thanks for your findings.

I would like to try your findings on a DVD-RAM disc and see which of the other filesystems used by Puppy that would work with PUPs and DVD-RAM media (i.e. FAT32, NTFS, ext2, ext4, etc.)

For those who may not be aware DVD-RAM is a DVD technology that allows a DVD to behave kinda like a HDD. Thus, there are the 3 very different DVD technologies: There are DVD+/-R, then there are DVD+/-RW, and there are DVD-RAM disc media that one can purchase.

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Good find getting DVD-RAM working Karl. DVD-RAM discs are nearly impossible to find, found some 'opened' in a Walmart discount bin years ago, bought them all.
Since I had the same errors you did, I thought they where defective.

There is not many places available here too. Staples office discount http://www.staples.de have them. It is in a suburb some 10 brit miles from my place. The are available in a packet of 3 . Will get me some more on monday. Verbatim [url="http://www.verbatim.com/subcat/optical-media/professional-optical/dvd ram"][/url] is a "brand" but I dont think that they are good quality. On that site they claim 100.000 writes ..

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